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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1147 - (show annotations) (download)
Tue Apr 3 17:39:52 2007 UTC (12 years, 7 months ago) by persson
File size: 11474 byte(s)
* fixed some more EG bugs that could cause noises or crashes

1 Version CVS HEAD (?)
2
3 * packaging changes:
4 - only the API relevant header (and source) files will be exported to
5 the Doxygen API documentation (explicitly listed in Doxyfile.in)
6
7 * general changes:
8 - replaced the old, confusing MIDI program change mechanism by a
9 flexible MIDI instrument mapper which allows to map arbitrary
10 (MIDI bank, MIDI program) pairs with arbitrary
11 (engine type, instrument file, file index) triplets which will be
12 loaded on the respective channel when such MIDI program change
13 messages arrive, beside that, each entry allows to define a life-time
14 strategy for the instrument, so the user can define whether the
15 instrument should i.e. be permanently loaded (to be able to switch
16 quickly among sounds) or i.e. loaded just on demand when the
17 respective program change arrives (to safe RAM space), as well as a
18 global volume factor for each entry, so the user can adjust the volume
19 dynamic of his mapped instrument collection without having to modify
20 the instrument files, also one can manage arbitrary amount of such
21 MIDI instrument maps and assign each sampler channel individually
22 a certain map, so that i.e. separation of normal instruments and
23 drumkits is possible
24 - new notification events for tracking changes to audio/MIDI devices,
25 MIDI instrument maps, MIDI instruments, FX sends, global volume.
26 - sampler was limited to load max. 200 instruments in the background
27 due to a constant size RingBuffer FIFO which is now replaced by a
28 dynamic (unlimited) size std::list FIFO
29 - added FX sends, these allow to route audio signals to arbitrary audio
30 output channels for being processed by external effect processors
31 (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
32 controllers
33 - global (sampler wide) volume can now be controlled at runtime
34 - Implemented new, improved notification system
35
36 * MIDI driver:
37 - dispatch bank select (MSB and LSB) messages
38
39 * audio driver:
40 - the ALSA audio output driver parameters now reflect the correct
41 parameter value ranges for the respective selected sound card
42 (patch by Till Wimmer, a bit fixed and extended)
43
44 * Gigasampler format engine:
45 - if a filter is used and EG2 finishes before EG1, let the voice
46 die when EG2 has finished (this fixes a problem with clicks and
47 voice starvation for some gigs)
48 - playback is no longer disabled during instrument loading
49 - all notes playing on a channel that changes its instrument keep
50 playing with the old instrument until they get a note off
51 command
52 - EG fix: a release value of zero could cause noises or crash
53 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
54 - EG fine tuning: when attack is zero the EG starts at a level
55 above max sustain level, which means that there is a decay phase
56 even if sustain is 100%
57 - more EG fixes: the level could sometimes go below zero and cause
58 noises or crashes
59
60 * Bug fixes:
61 - fixed crash occurring on certain LSCP scripts (Bug 39)
62 - another thread safety fix for lscp "load engine" and "set
63 channel audio output device"
64
65 Version 0.4.0 (24 November 2006)
66
67 * packaging changes:
68 - changed deprecated copyright attribute to license; added ldconfig
69 to post-(un)install steps; added devel package for liblinuxsampler;
70 to linuxsampler.spec (RPM)
71 - install necessary development header files for allowing 3rd party
72 applications to link against liblinuxsampler
73 - liblinuxsampler's API documentation can be generated with 'make docs'
74 (Doxygen required)
75 - added benchmark to automatically detect the best triangle LFO
76 implementation (currently either an integer math solution or a
77 di-harmonic approximation), automatic detection can be overriden
78 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
79 configure script argument though (mandatory for cross-compilation)
80 - do not automatically pick optimized gcc flags if the user already
81 provided some on his own (as CXXFLAGS)
82 - added compile time option to disable processing of All-Notes-Off MIDI
83 messages
84 - added compile time options to allow disabling the various audio and
85 MIDI drivers
86 - fixed automatic GCC CPU switch detection on PPC
87 (patch by Ebrahim Mayat)
88
89 * Gigasampler format engine:
90 - extensive synthesis optimization
91 (reimplementation of EGs and LFO(s), removed synthesis parameter
92 prerendering and the synthesis parameter matrix in general, splitting
93 each audio fragment into subfragments now where each subfragment uses
94 constant pitch and filter coefficients. The volume coefficient is
95 linearly interpolated inside a subfragment, unless
96 --disable-interpolate-volume is set.)
97 - fine tuning of the EG modulation parameters
98 - improved filter cutoff calculation by adding support for the
99 following gig parameters: Cutoff freq (used when no cutoff
100 controller is defined), Control invert, Minimum cutoff, Velocity
101 curve and Velocity range. The keyboard tracking now scales
102 cutoff frequency instead of resonance.
103 - added support for gig parameter Resonance.
104 - fixed bug in sysex handling (patch by Juan Linietsky)
105 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
106 which can be overridden with --enable-global-attenuation
107 - EG fixes: made the length of "attack hold" stage more
108 accurate. Release stage can now start before attack stage
109 ends. Cancel release didn't work when sustain was zero. Attack
110 time now has a minimal value to prevent clicks.
111 - fixed pitch changes larger than one octave
112 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
113 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
114 all modes can be altered via standard GM messages, that is CC5 for
115 altering portamento time, CC65 for enabling / disabling portamento
116 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
117 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
118 parameter) and crossfade
119 - added support for the "attenuation controller threshold" gig
120 parameter
121 - added smoothing of volume changes caused by control change
122 messages
123 - sample loop parameters are now taken from the DimensionRegion
124 instead of the wave chunk
125 - fixed keyswitching for v3 gigs with a number of keyswitch splits
126 not equal to a power of two
127 - reimplementation of the filter algorithm. The new filter is more
128 accurate and supports all gig filter types, including bandreject
129 and lowpass turbo.
130 - real support for 24 bit samples - samples are not truncated to
131 16 bits anymore
132 - support for aftertouch (channel pressure, not polyphonic
133 aftertouch)
134 - LFO1 behaviour fixed (dampening from max volume instead of
135 amplifying from 0)
136
137 * LSCP server:
138 - fixed application exit on broken pipe error (fixes bug #20)
139 - fixed the notification messages delay due to lack of
140 network activity (fixes bug #26)
141 - fixed parser bug which occured on space(s) within device parameters
142 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
143
144 * audio driver:
145 - added aRts audio output driver (by no means RT safe)
146
147 * MIDI driver:
148 - fixed legacy sysex code which caused dispatching of MIDI SysEx
149 messages several times instead of once
150 - API extension for MIDI drivers which already supply exact time stamps
151 for events (i.e. for offline rendering based MIDI drivers)
152 - added checks for bad MIDI data
153
154 * linuxsampler application:
155 - show available sampler engine types on startup
156
157 * general changes:
158 - support for muting sampler channels and solo mode of the same, two new
159 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
160 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
161 introduced for this, the behavior is the same like on a mixer console
162 (patch by Grigor Iliev, a bit adjusted). Also added configure option
163 --enable-process-muted-channels which can be used to enable the
164 processing of muted channels.
165 - support for sostenuto pedal
166 - support for monitoring the total number of active voices
167 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
168 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
169 - fixed some memory management errors
170 - fixed some concurrency problems that could lead to crashes when
171 LSCP commands were executed
172 - fixed crash when instrument loading failed previously on the same
173 sampler channel (fixes bug #36)
174
175 Version 0.3.3 (15 July 2005)
176
177 * packaging changes:
178 - fixed compilation with gcc 4.0
179
180 * Gigasampler format engine:
181 - LFO preprocessing was performed even though the respective LFO was
182 disabled by the instrument patch (minor efficiency fix)
183 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
184 for volume ramp downs in the same fragment (needed for current voice
185 stealing implementation) then simply inform the user with a warning
186 about possible click sounds and reduce the volume ramp down
187 appropriately instead of cancelling the audio device connection
188
189 Version 0.3.2 (24 June 2005)
190
191 * packaging changes:
192 - updated autotools build files to compile on OS X
193 (conditional compilation of CoreMIDI and MidiShare drivers)
194 - hand-crafted assembly optimization code can be disabled with
195 './configure --disable-asm' (definitely not recommended)
196 - fixed 'make dist' rule to include all necessary files
197 - require automake (>= 1.5) for 'make -f Makefile.cvs'
198 (due to 'dist-bzip2' automake option)
199
200 * Gigasampler format engine:
201 - support for the gig parameters for "release velocity response" curves
202 - fine tuning of the EGADSR envelope
203 - volume of release triggered samples now depends on note-on velocity,
204 note length and gig parameter "release trigger decay" instead of
205 note-off velocity.
206 - revised voice stealing
207 (fixes crash and endless loop caused by voice stealing)
208 - don't reset scale tuning on instrument or audio output device change
209 - handle key group conflicts right at the beginning of each fragment
210 instead of when the respective voice is actually launched
211 (fixes undefined behavior if stolen voices belonged to a key group -
212 this case was followed by a "killed voice survived" error message)
213 - fixed minor issue with null/silence samples
214 (those stole voices even though they don't need a voice at all which
215 resulted in "voice stealing didn't work out" messages)
216 - don't reset volume, pan, pitch and MIDI controller values on
217 instrument or audio output device change
218
219 * LSCP server:
220 - fixed some crashes (patch by Grigor Iliev, fixes #19)
221 - fixed LSCP event "CHANNEL_INFO" notification
222 (e.g. did not notify on volume changes or MIDI program change events)
223
224 * linuxsampler application:
225 - added command line parameters --lscp-addr and --lscp-port to override
226 default IP address and port of LSCP server
227
228 Version 0.3.1 (24 May 2005)
229
230 * initial release

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